Satish Mane
B. Sc., M. Sc. (Physical Chemistry), (Currently Ph. D. Student)
Email: smm@udct.org
| Education Details | ||
Course |
Institute/University |
Year of Passing |
| B. Sc. | Shivaji University | 1991 |
| M. Sc. | Mumbai Univeristy | 2003 |
| Ph. D. Science | University Institute of Chemical Technology, UICT, Mumbai | - |
Abstract of Ph. D. Thesis:
Process developement of Organic Phsophate and Phosphite Compounds
Esterfication of phosphoric/phosphorus acid with various combinations of alcohols, phenols and alkyl-substituted phenols produces a large number of compounds collectively known astrialkyl/triaryl/phosphates/phosphites. Because of their viscosity, relative stability, phosphorus content etc., such compounds find use in a variety of commercial applications. They are recognized in engineering and polymer/plastic application for their plasticizing properties. Triaryl phosphates are esters of phosphoric acid with hydroxyl compound. They find numerous applications as plasticizers for polyvinyl chloride (PVC), cellulose acetate etc; in the formulation of hydraulic fluids and as extreme pressure additives to lubricants. The triaryl phosphite approaches the triaryl phosphate in insensitivity to hydrogen chloride, and therefore the most readily prepared esters of phosphorus acid. They have found utility as oil additives, stabilizer for rubber, and stabilizers for polyvinyl chloride.
The triaryl phosphites are produced by reaction of slight excess(2-10%) of phenols or alkyl phenols with phosphorus trihalide. The trichloride is added to phenols at such rate and reaction temperature being increased from 70C-80C initially to 150C following completion of the addition. The batch is then subjected to reduced pressure at elevated temperature to remove dissolved hydrogen Chloride gas and unreacted phenols.
The present work deals with a modified method of preparation of triaryl phosphates/phosphites. Using this method, several triaryl/ mixed aryl phosphate and phosphites to be synthesized. Thereby, giving suitable characteristics to their properties such as viscosity, Iron content, chloride content, acid value , Refractive index etc.